(19)
(11) EP 0 602 675 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.08.1994 Bulletin 1994/33

(43) Date of publication A2:
22.06.1994 Bulletin 1994/25

(21) Application number: 93120438.2

(22) Date of filing: 17.12.1993
(51) International Patent Classification (IPC)5: C01B 21/14, B01D 61/44, C07C 209/68, C07C 213/08
// B01D53/14
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 18.12.1992 US 993015

(71) Applicant: UNION CARBIDE CHEMICALS & PLASTICS TECHNOLOGY CORPORATION
Danbury, Connecticut 06817-0001 (US)

(72) Inventors:
  • Roy, Veronique
    Laval, Quebec H7E 3A8 (CA)
  • Hakka, Leo Ernest
    Dollard Des Ormeaux Quebec H9G 2K4 (CA)
  • Sarlis, Jean Ioannis
    Laval Quebec H7G 3E1 (CA)

(74) Representative: Barz, Peter, Dr. et al
Patentanwalt Kaiserplatz 2
80803 München
80803 München (DE)


(56) References cited: : 
   
       


    (54) Process for converting heat stable amine salts to heat regenerable amine salts


    (57) Processes are disclosed for converting heat stable amine salts to heat regenerable amine salts using a modified electrodialysis zone (140). The processes of the present invention can be used to reduce the level of heat stable salts in a lean solvent stream in an acid gas removal process and can be integrated with the acid gas removal process to utilize process streams as a source of ions.






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